Which statement is correct for a chemical system at dynamic equilibrium?
The concentration of the reactants is equal to the concentration of the products.
The chemical reaction has gone to completion and both the forward and backward reactions have stopped.
The concentrations of both the reactants and products remain constant.
The rate of the forward reaction is greater than the rate of the backward reaction.
25 exam-style questions on OCR GCSE Chemistry Equilibria. Each one has a worked solution and a mark scheme showing where the marks go.